package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public static final String WX_LOGIN = "https://api.weixin.qq.com/sns/jscode2session";
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    /*
    * 微信登录*/
    @Override
    public User wxlogin(UserLoginDTO userLoginDTO) {
        //调用微信接口服务 获得当前微信用户的openidM
        Map<String,String> map = new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json = HttpClientUtil.doGet(WX_LOGIN,map);

        JSONObject jsonObject = JSON.parseObject(json);
        String openid = jsonObject.getString("openid");
        //判断openid是否问空 如果为空表示登录失败
         if(openid == null)
         {
             throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
         }
        //判断档期用户是否为新用户
         User user = userMapper.getByOpenid(openid);
        //如果是新用户 自动完成注册
           if(user == null)
           {
               user = User.builder()
                       .openid(openid)
                       .createTime(LocalDateTime.now())
                       .build();
               userMapper.insert(user);
           }
        //返回这个用户对象
        return user;
    }
}
